Hybrid power assembly integrated structure

Abstract

The utility model provides a hybrid power assembly integrated structure, and relates to the technical field of automobiles, the hybrid power assembly integrated structure comprises an axial magnetic flux generator, an axial magnetic flux driving motor, a driving output gear pair and a differential mechanism, and the driving output gear pair is connected between the axial magnetic flux driving motor and the differential mechanism; the axial magnetic flux generator and the axial magnetic flux driving motor both adopt axial magnetic flux motors, so that the axial size of the assembly is shortened, and the assembly cost is reduced. The axial magnetic flux generator and the axial magnetic flux driving motor are both axial magnetic flux motors, the axial magnetic flux motors have the advantages of being large in torque and low in maximum rotating speed and can be directly connected with the engine body, a speed increasing gear shaft mechanism of a traditional single-gear hybrid power assembly is not needed, and compared with a traditional radial magnetic flux motor, the axial magnetic flux motor has the advantages of being large in torque and low in maximum rotating speed. The axial magnetic flux motor can reduce the number of gears and gear shafts, thereby saving the cost.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a hybrid power assembly integrated structure. Background Art

[0002] Plug-in hybrid vehicles, particularly extended-range and single-speed DHT plug-in hybrids, have gained widespread consumer recognition due to their superior range, low-temperature range degradation, refueling speed, and price advantages relative to pure electric vehicles. These models have effectively alleviated consumers' anxiety about range and right-of-way. However, current hybrid powertrains still face some challenges.

[0003] First, hybrid powertrains integrate multiple components, including the drive motor, engine, and gearbox. This results in larger axial dimensions for higher-power hybrid powertrains. This not only hinders vehicle cabin layout but also potentially impacts the integration of advanced suspension systems (such as double wishbone suspension). Second, the complexity and numerous components of hybrid powertrains drive high assembly costs, which, to a certain extent, limits the further promotion and application of hybrid vehicles. Therefore, we address this issue by proposing an integrated hybrid powertrain structure. Summary of the Invention

[0004] The purpose of the present utility model is to address the problem that the existing hybrid power assembly integrates multiple components such as a drive motor, an engine, a gearbox, etc., resulting in a larger axial size of a hybrid assembly with higher power.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention provides a hybrid powertrain integrated structure to improve the above-mentioned problem.

[0006] The specific application is as follows:

[0007] A hybrid powertrain integrated structure includes an axial flux generator, an axial flux drive motor, a drive output gear pair, and a differential. The drive output gear pair is connected between the axial flux drive motor and the differential. The axial flux generator and the axial flux drive motor both adopt axial flux motors to shorten the axial size of the assembly and reduce the assembly cost.

[0008] As a preferred technical solution of the present application, the axial flux driven motor is used to drive the output gear pair and the differential to output torque to drive the entire vehicle.

[0009] As a preferred technical solution of the present application, a battery system is connected between the axial flux generator and the axial flux drive motor.

[0010] As a preferred technical solution of the present application, it also includes an engine body, which is directly connected to the axial flux generator for generating electricity.

[0011] As a preferred technical solution of the present application, it also includes an engine main body, the engine main body is connected to an engine direct-drive gear pair, and the engine main body is connected to the axial flux generator through the engine direct-drive gear pair.

[0012] As a preferred technical solution of the present application, a clutch is connected between the drive output gear pair and the engine direct drive gear pair, and the clutch is used to control the power transmission between the engine body and the drive output gear pair.

[0013] As the preferred technical solution of this application, the clutch is an electronically controlled wet multi-plate clutch, which has the characteristics of fast response and smooth engagement, can effectively control the impact when the engine body intervenes in driving, and improve driving comfort.

[0014] As the preferred technical solution of this application, the differential adopts an electronic limited slip differential, which can automatically adjust the power distribution of the left and right half-axles according to the wheel slip situation, thereby improving the vehicle's off-road capability and handling stability.

[0015] As a preferred technical solution of the present application, the differential is connected to the electronic stability control system of the vehicle.

[0016] As a preferred technical solution of the present application, a heat dissipation structure is provided on the housing of the axial flux generator and the axial flux drive motor. The heat dissipation structure includes heat dissipation fins and liquid cooling channels arranged on the housing to ensure the performance stability of the axial flux generator and the axial flux drive motor during long-term operation and extend their service life.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the scheme of this application:

[0019] In order to solve the problem in the prior art that the hybrid powertrain integrates multiple components such as the drive motor, engine, gearbox, etc., resulting in a larger axial size of the higher-power hybrid assembly, the axial flux generator and the axial flux drive motor in this application both adopt axial flux motors. The axial flux motor has the characteristics of large torque and low maximum speed, and can be directly connected to the engine body. It does not require the speed-increasing gear shaft mechanism of the traditional single-speed hybrid assembly. Compared with the traditional radial flux motor, the axial flux motor can reduce the number of gears and gear shafts, thereby saving costs; since the axial size of the axial flux motor is greatly shortened, and the engine body and the axial flux generator do not require a speed-increasing gear mechanism, the axial flux drive motor reduces one stage of gear pair, so the axial size of the assembly is further shortened, which is conducive to optimizing the layout space of the vehicle cabin and making it easier to install the advanced suspension system on the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the hybrid powertrain integrated structure provided in this application;

[0021] Figure 2 A schematic diagram of the structure of the engine direct-drive gear pair and clutch of the hybrid powertrain integrated structure provided in this application;

[0022] Figure 3 A schematic diagram of the hybrid powertrain integrated structure provided in this application during pure electric drive;

[0023] Figure 4 This is a schematic diagram of the hybrid powertrain integrated structure provided in this application when performing the range extension function;

[0024] Figure 5 This is a schematic diagram of the engine main body of the hybrid powertrain integrated structure provided in this application when directly driven.

[0025] Indicated in the figure:

[0026] 1. Engine body; 2. Engine direct drive gear pair; 3. Axial flux generator; 4. Axial flux drive motor; 5. Drive output gear pair; 6. Differential; 7. Clutch. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] As described in the background technology, hybrid powertrains integrate multiple components such as drive motors, engines, and gearboxes, resulting in larger axial dimensions for higher-power hybrid powertrains. This is not only detrimental to the layout of the vehicle cabin, but may also affect the installation of advanced suspension systems (such as double wishbone suspension) on the vehicle. Secondly, the hybrid powertrain is complex and has many components, resulting in high assembly costs, which to some extent limits the further promotion and application of hybrid vehicle models.

[0029] In order to solve this technical problem, the utility model provides a hybrid powertrain integrated structure.

[0030] Specifically, please refer to Figure 1 The hybrid powertrain integrated structure specifically includes:

[0031] An axial flux generator 3, an axial flux drive motor 4, a drive output gear pair 5 and a differential 6. The drive output gear pair 5 is connected between the axial flux drive motor 4 and the differential 6. The axial flux generator 3 and the axial flux drive motor 4 both adopt axial flux motors.

[0032] The hybrid powertrain integrated structure provided by the present invention, the axial flux generator 3 and the axial flux drive motor 4 in this application both adopt axial flux motors, which have the characteristics of large torque and low maximum speed, and can be directly connected to the engine body 1, without the need for a speed-increasing gear shaft mechanism of a traditional single-speed hybrid assembly. Compared with the traditional radial flux motor, the axial flux motor can reduce the number of gears and gear shafts, thereby saving costs; since the axial dimension of the axial flux motor is greatly shortened, and the engine body 1 and the axial flux generator 3 do not require a speed-increasing gear mechanism, the axial flux drive motor reduces one stage of gear pair, so the axial dimension of the assembly is further shortened, which is conducive to optimizing the layout space of the vehicle cabin and making it easier to install the advanced suspension system on the vehicle.

[0033] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0036] Example 1, please refer to Figure 1A hybrid powertrain integrated structure includes an axial flux generator 3, an axial flux drive motor 4, a drive output gear pair 5, and a differential 6, wherein the drive output gear pair 5 is connected between the axial flux drive motor 4 and the differential 6; the axial flux generator 3 and the axial flux drive motor 4 are both axial flux motors. In the present application, the axial flux generator 3 and the axial flux drive motor 4 are both axial flux motors. The axial flux motor has the characteristics of large torque and low maximum speed. It can be directly connected to the engine body 1 and does not require a speed-increasing gear shaft mechanism of a traditional single-speed hybrid assembly. Compared with traditional radial flux motors, the axial flux motor can reduce the number of gears and gear shafts, thereby saving costs; because the axial dimension of the axial flux motor is greatly shortened, and the engine body 1 and the axial flux generator 3 do not require a speed-increasing gear mechanism, the axial flux drive motor 4 reduces one stage of gear pairs, so the axial dimension of the assembly is further shortened, which is conducive to optimizing the layout space of the vehicle cabin and making it easier to install advanced suspension systems (such as double wishbone suspension) on the vehicle.

[0037] Furthermore, the axial flux driven motor 4 is used to drive the output gear pair 5 and the differential 6 to output torque to drive the entire vehicle.

[0038] Furthermore, a battery system is connected between the axial flux generator 3 and the axial flux drive motor 4 , and the battery system is used to store the electrical energy generated by the axial flux drive motor 4 .

[0039] Example 2 further optimizes the hybrid powertrain integrated structure provided in Example 1. Specifically, Figure 1 As shown, it also includes an engine body 1, which is directly connected to an axial flux generator 3 for generating electricity; Figure 1The integrated scheme shown is composed of an engine body 1, an axial flux generator 3, an axial flux drive motor 4, a drive output gear pair 5 and a differential 6, which reduces the engine direct drive gear pair 2 and the clutch 7, which can also realize pure electric drive function and range extending function, but cannot realize engine body 1 direct drive function; the integrated scheme adopts an axial flux drive motor 4, the output torque of the axial flux motor can reach 2-3 times more than that of the radial flux motor, the speed ratio requirement of the reduction is also correspondingly reduced, one-stage reduction gear pair can be reduced, two gears and one gear shaft are saved, so compared with the traditional range extending power assembly, the integrated scheme can save two gears and one gear shaft in total, realizing the reduction of the assembly cost; the integrated scheme adopts the axial flux generator 3 and the axial flux drive motor 4, compared with the traditional radial flux motor, the axial dimension is greatly shortened, at the same time, since the engine body 1 and the axial flux generator 3 do not need the speed increasing gear mechanism and the engine direct drive gear pair 2, the axial flux drive motor 4 reduces one-stage gear pair, the axial dimension is further shortened, which can achieve the reduction of the assembly volume, the optimization of the vehicle cabin layout space and the facilitation of the high-level suspension system on the vehicle.

[0040] In embodiment 3, the hybrid power assembly integrated structure provided in embodiment 1 is further optimized, specifically, as shown in Figure 2 The engine body 1 is connected with the engine direct drive gear pair 2, and the engine body 1 is connected with the axial flux generator 3 through the engine direct drive gear pair 2.

[0041] In embodiment 4, the hybrid power assembly integrated structure provided in the above embodiments is further optimized, as shown in Figure 2 The clutch 7 is connected between the drive output gear pair 5 and the engine direct drive gear pair 2, and the clutch 7 is used for controlling the power transmission between the engine body 1 and the drive output gear pair 5.

[0042] Further, the clutch 7 is an electrically controlled wet multi-plate clutch, which has the characteristics of fast response and smooth engagement, and can effectively control the impact when the engine body 1 intervenes in driving, thereby improving the driving comfort.

[0043] Further, the differential 6 adopts an electronic limited slip differential, which can automatically adjust the power distribution of the left and right half shafts according to the wheel slip condition, thereby improving the off-road capability and the control stability of the vehicle.

[0044] Further, the differential 6 is connected with the electronic stability control system (ESC) of the vehicle, can receive the signal of the electronic stability control system (ESC) and work cooperatively, more accurately adjusts the power distribution of the left and right half shafts when the vehicle is side slipping or out of control, thereby further improving the driving safety of the vehicle.

[0045] Further, as shown in Figure 4 As shown in the drawings, the housing of the axial flux generator 3 and the axial flux drive motor 4 is provided with a heat dissipation structure, which includes heat dissipation fins and a liquid cooling channel provided on the housing, so as to ensure the performance stability of the axial flux generator 3 and the axial flux drive motor 4 during long-time operation and prolong the service life.

[0046] The use process of the hybrid power assembly integrated structure is as follows:

[0047] When pure electric driving, as shown in the drawings, Figure 3 The axial flux generator 3 does not work, the clutch 7 is not closed, and only the axial flux drive motor 4 outputs torque through the drive output gear pair 5 and the differential 6 to drive the vehicle to run;

[0048] When range extending driving, as shown in the drawings, Figure 4 The engine body 1 drives the axial flux generator 3 to generate power, the clutch 7 is not closed, and the generated power can supply power to the battery system, and at the same time, the generated power can also provide power for the axial flux drive motor 4 to work, and the axial flux drive motor 4 outputs torque through the drive output gear pair 5 and the differential 6 to drive the vehicle to run;

[0049] When the engine body 1 directly drives, as shown in the drawings, Figure 5 The clutch 7 is closed, the engine body 1 outputs torque through the engine direct drive gear pair 2 to the drive output gear pair 5 and the differential 6 to drive the vehicle to run, in the process, the axial flux generator 3 is selected to work to generate power to provide power for the battery system and the axial flux drive motor 4, and at the same time, the axial flux drive motor 4 is also selected to work together with the engine body 1 to output torque through the drive output gear pair 5 and the differential 6 to drive the vehicle to run.

[0050] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integral; can be mechanical connection, also can be electric connection or each other can communicate; can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside communication or two element interaction relation, unless another definite limitation. For ordinary skilled in the art, can understand the concrete meaning of above-mentioned terms in the utility model according to specific circumstances.

[0051] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some of the technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A hybrid powertrain integrated structure, characterized in that: The invention comprises an axial flux generator (3), an axial flux drive motor (4), a drive output gear pair (5) and a differential (6), wherein the drive output gear pair (5) is connected between the axial flux drive motor (4) and the differential (6); the axial flux generator (3) and the axial flux drive motor (4) both adopt axial flux motors.

2. The hybrid powertrain integrated structure according to claim 1, characterized in that: The axial flux drive motor (4) is used to drive the output gear pair (5) and the differential (6) to output torque to drive the entire vehicle.

3. The hybrid powertrain integrated structure according to claim 1, characterized in that: A battery system is connected between the axial flux generator (3) and the axial flux drive motor (4).

4. The hybrid powertrain integrated structure according to claim 1, characterized in that: It also includes an engine body (1), which is directly connected to an axial flux generator (3) for generating electricity.

5. The hybrid powertrain integrated structure according to claim 1, characterized in that: The invention also comprises an engine main body (1), wherein the engine main body (1) is connected to an engine direct drive gear pair (2), and the engine main body (1) is connected to an axial flux generator (3) via the engine direct drive gear pair (2).

6. The hybrid powertrain integrated structure according to claim 5, characterized in that: A clutch (7) is connected between the drive output gear pair (5) and the engine direct drive gear pair (2), and the clutch (7) is used to control the power transmission between the engine body (1) and the drive output gear pair (5).

7. The hybrid powertrain integrated structure according to claim 6, characterized in that: The clutch (7) is an electronically controlled wet multi-plate clutch.

8. The hybrid powertrain integrated structure according to claim 1, characterized in that: The differential (6) adopts an electronic limited slip differential.

9. The hybrid powertrain integrated structure according to claim 8, characterized in that: The differential (6) is connected to the electronic stability control system of the vehicle.

10. The hybrid powertrain integrated structure according to claim 1, characterized in that: The housings of the axial flux generator (3) and the axial flux drive motor (4) are both provided with a heat dissipation structure, which comprises heat dissipation fins and a liquid cooling channel provided on the housing.

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